Kirstie Alley and Patrick Swayze almost lovers

Kirstie Alley and Patrick Swayze got way too emotionally invested in each other - while married to other people - as they were filming the miniseries North and South in the mid-1980s.

Kirstie Alley and Patrick Swayze got way too emotionally invested in each other — while married to other people — as they were filming the miniseries North and South in the mid-1980s.

Alley dropped the bombshell on the Monday installment of Entertainment Tonight. Sparks flew between the two almost immediately, said the Dancing With the Stars contestant. Although they tried to avoid “going down that road,” she said, they ultimately fell in love — although she clarified that they didn’t technically “have an affair.” “I think what we did was worse,” she said.

“When you fall in love with someone when you’re married, you jeopardize your own marriage and their marriage. It’s doubly bad.” Alley is still friendly with his wife, Lisa Niemi, but isn’t sure whether Niemi — who asked Alley to speak at his 2009 funeral — knew about their relationship.

Earlier this week, Alley told Barbara Walters that she fought the urge to “run off and marry” John Travolta — “the greatest love of my life” — while they worked on the 1989 film Look Who’s Talking.